Computer newbie needs assistance: I do firearms instruction for Law Enforcement and Civilians. I would like to have a power point program for the classroom sessions. I need advise as to the best basic set-up. Laptop advise. Projector advise. I don't need anything great. It will be for small classrooms of around 20 students in a small setting. I would like to stay in the $2000.00 range for both the laptop and projector if possible. Any ideas? Thanks in advance.